MDL-29873 Lesson: Essays not shown on grade page with SQL server
MDL-47349 gradereport: Use category title on report
MDL-47310 gradebook: accessibility improvements
Merge branch 'MDL-29873' of git://github.com/jmvedrine/moodle
Merge branch 'MDL-47349-master' of git://github.com/andrewnicols/moodle
Merge branch 'MDL-47310-master' of git://github.com/jethac/moodle